Power lift for road machines



Nov. 6, 1928.

R. C. WILLIAMSON POWER LIFT FOR ROAD MACHINES 5 heets-Sheet 1 FiledSept.

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Nov. 6, 1928.

R. C. WILLIAMSON POWER LIFT FOR ROAD MACHINES Filed Sept. 18, 1925 3Sheets-Sheet Nov. 6, 1928.

R. C. WILLIAMSON POWER LIFT FOR ROAD MACHINES Filed Sept. 18, 1925 3Sheets-Sheet Patented Nov. 6, 1928.

UNITED STATES PATENT oEFlcE:

ROY C. WILLIAMSON, OF KENNETT SQUARE, PENNSYLVANIA, `ASSIGI'NOR TOAMERICAN ROAD MACHINERY COMPANY, INC., 0F XENNETT SQUARE, PENNSYLVANIA,A COR PORATION OF DELAWARE.

i POWER LIFT FOR ROAD MACHINES.

Application led September 18, 1925. Serial No. 57,061.

My invention relates to road machines and more 'particularly to poweroperated machines for scarifying and grading roads. Machines of thiskind have been heretofore made, with power applied to the rear axle,through a Fordson or similar power unit mounted on the machine framewhereby the machine is ropelled. There isatransversely extending rcarrying scariiiers and als() a scraping or levelling blade hung fromthe machine frame, and adapted to be raised or tilted at an angle orthrown out of action entirely, by hand levers and connections from theoperators seat or platform.

It will be understood that the operator of a road machine of this kindhas two distinct and separate things to take care of. First,

. he has to run his engine and steer the machine in the direction andpath to be acted upon, faster or slower as the work may require. At

i the same time he has to attend to the lowering,

tilting and raising out of action of the scarifiers and scraper.

The object of my invention is to provide a road machine of thisdescription wherein Vthese raisings and lowerings and tiltingadjust-ments of both scarifiers and scraper may be operated by powerfrom the engine which is at the same tlme pro elling the vehicle.

Thus the manual 1a r falling upon the operator is greatly lessened andhe can' devote more time and attention to the operation of the variousadjustments, insuring better work I will now proceed with a detaileddescription of aroad machine having my invention applied thereto, withreference to the accompanying drawings, in which- Fig. 1 is a side viewofa road machine embodying my invention, partly in section, and showinga Fordson power unit in broken lines.

FigQ is a plan view of a portion of the same, drawn to an enlargedscale.

Fig. 3 shows a cross-section, slightlyenlarged, on the line 3 3 of Fig.1.

Fig. 4 is an enlarged detail ofconstruction shown principally insection.

The frame a of the machine, carried upon the wheels b, has mounted on ita motor shown as a Fordson c. The driving axle d of the Fordson impartsmotion to the driving axle done by the machine and better time in doing,The front cranking shaft is connected by "a suitable coupling It withan extension carrying a worm t' meshing with a worm wheel j turnableupon a cross shaft c mounted in bearings on the machine frame.

Shaft c carries a standard form of clutch Z, by means of which wormwheel j is caused to drive shaft k when desired. The clutch is operableby means of levers and links m co-nnecting With a rod n which extendsrearwardly to a hand lever, not shown,vconvenient to the operator.

Slidably splined on shaft k is a member having two conical frictionwheels o facing toward each other. A longitudinally extending shaft pcarries a similar conical friction wheel g, projecting intermediatewheels o in such manner that when the member carrying wheels o is slidalong shaft k, frictional contact is made between wheel g and either oneor the other of Wheels o, whereby7 shaft p may be driven in eitherdirection.

As seen in Fig. 2'the member carrying wheels o vmay be operated by meansof bell crank lever f." connected with reach rods s," which extendsrearwardly and is connected with a hand lever, not shown, convenient tothe operator. y

Shaft p is mountediat its forward end in a suitable bearing t andcarries a worm u', which meshes with a worm wheel sector o on a crossshaft jw mounted in bearings on the machine frame.

Shaft w carries at either end arms or cranks a: which arevpivotallyconnected by links y with the scarifier frame z.

ed scariier bar is swung forward and upward.

The usual scariers 6 are clamped to frame .e by individual blocks andbolts 7 and are thus raised or lowered by the operator,

by sprockets and belt f in' Frame e is sus? pended at both ends by barspivotally hung through reach rod 8, moving the friction wheel member oin one direction or the other.

The scraper bar 8 is ixedly carried by suitable links from brackets 9depending from a ring 10, carried in turn by a swinging frame 11, bymeans of a central pivot 12. Thus, the ring or circle and scraper barcarried by it may be turned about pivot 12 in a horizontal plane. Thecircle is provided with a series of holes 13, and after the scraper barhas been turned to the desired angle a bolt 14 is dropped throufrh ahole rovided for itin frame 11 and the liole 13 w ich aligns with it,and thus the circle and scraper bar are held in their angular positionwith respect to frame 11. Depending anglesl, from framell, underlieportions of circle 10, and

the angle which underlies bolt 14 is provided with a hole, in line withthe hole in frame 11, whereby bolt 14 passes through both holes,-

and between them, t-hrough a hole 13 of circle 10.

Frame 11 is supported at its rearward end by a horizontal pivot 16 in ablock which is turnable on a vertical pivot 17, in a yoke 18, which inturn is pivoted horizontally in cross member of the machine frame. framemay be swung from side to side about pivot 17, up or down about pivot16, and may be swivelled by means of pivot 18.

Frame 11 at its forward end carries a crossbar 19, both ends of whichare supported by rods 20 depending from arms 21 of worm sectors 22,mounted in brackets 23 on both side members of frame a. In thesebrackets are also mounted short vertical shafts/carrying worms 24 inmesh with worm sectors 22, and at its lower end each shaft carries aconical friction wheel 25.

Friction wheel 25, on each side of the machine, is arranged to be drivenin either direction by a slidable member having two conical frictionwheels 26, in a similar manner to the before-described friction wheels gand o. Each of these slidable members is splined to a horizontal shaft27,'which extend forward and are arranged to be driven from cross shaft7c by means of bevels 28. The shdable members carryingr the frictioncones 26 are individually movable from a central position in which theydo not contact with cone 25, either backward or forward, by means ofyoke arms 29, which are connected by reach rods 30 with hand levers 31arranged convenient to the operator. By operating one .of these handlevers, therefore, when the engine 1s running andclutch Z is thrown 1nmesh to drive shaft k, the operator can at will cause the vertical shaftcarrying worm 24, on either 'side of the machine, to rotate in eitherdirection, thus raising or lowering that end of bar 19 on frame 11 andwith it that end of the scraper bar, which movement is allowed by theswivelling of yoke 18 in cross member 40.

Thus the' The following provision is made for maintaining the scraper,bar in any set position sideways, whether it is desired to run with thescraper central or projecting one side or the other.

Crossbar 19 of frame 11 has rigidly secured to it a guide bar 33 havinga series of holes 34. A slide 35 is mounted upon bar 33 and carries aspring-pressed pin 36, in line with holes 34, whereby the slide may bedefinitely located at various points alon the bar. A swinging rod 37connects sli e 35 with a crossbar 38 connecting the two side members offrame a.

As shown in the drawings, the scraper is shown in center position. Bywithdrawing pin 36 free of bar 33, bar 17 and frame 11 may be swung toone side, bar 33 sliding in slide 35, and pin 36 allowed to enteranother holel 34, holding the swinging frame 11 and scraper carriedthereb in set position.

The front w ieels of the machine are mounted upon steering kunckles (notshown) which are connected in the usual manner and may be actuated as bya rod 41 with an arm 42 on a post 43, at the other end of which isanother arm 44 from which a reach rod 45 extends rearwardly where it isconnected with the steering post 46 of the Fordson by bevel gears orother means, not shown as it involves no invention.

Having now fully described my invention, what I claim and desire toprotect by Letters Patent is:

1. A road machine having a frame with supporting wheels, a motor on theframe, means for driving the machine by the motor, a road working toolpivotally mounted on the frame, a transverse shaft on the frame, crankson the shaft, connections between the 'cranks and the tool, a worm andworm wheel connection for rotating the shaft, and clutch means forconnecting the said shaft to the motor for raising or lowering the tool.

2. A road machine having a frame with supporting wheels, a. motor on theframe, means for driving the machine by the motor, a road working toolpivotally mounted on the frame, a transverse shaft on the frame, crankson the shaft, connections between the cranks and the tool, a transversepower shaft, a worm wheel on the first shaft, a longitudinally extendingshaft having a worm thereon meshing with the worm wheel, shiftablefriction cones on the transverse power shaft, a friction cone onthelongitudinal shaft arranged to be engaged by either of frictioncones, and clutch means for connecting the power Shaft tothe motor.

3. A road machine having a frame with supporting wheels, a motor on theframe, means for driving the machine by the motor,

lOO

a road working tool pivotally mounted on v last mentioned worm wheel tothe` power shaft.

4. A road machine having a plurality of tools vmounted thereon, a motor,a transverse power shaft and two longitudinal power shafts gearedthereto, a worm and worm wheel connections including a clutch betweenthe motor and transverse shaft, connections between each of thelongitudinal power shafts and one of the tools. and a clutch betweeneach of said longitudinal power shafts and said tooll 5. A road machinehaving a plurality of tools mounted thereon, a motor, a transverse powershaft and two longitudinal power shafts geared thereto, a worm and aworm wheel connection including .a clutch between the motor andtransverse shaft, adjusting connections between the longitudinalpowershafts and one of the tools including shiftable friction cones,whereby the tool may be` moved in either direction, and means forshifting either of said cones to raise or lower on end of the toolindependent of the other en 6. A road machine having a frame withsupporting wheels, a motor on the' frame, means for driving the machineby the motor, a road working tool ivotally mounted on the forward end ofthe rame, a transverse shaft on the frame, crank and link connectionsbetween the shaft and tool, a longitudinal shaft journaled on the frame,worm and worm wheel connections between said shafts, and means forconnecting said longitudinal shaft to the motor.

7. A road machine having a frame with supporting wheels, a motor -on theframe, means for driving the machine by the motor, a road working toolivotally mounted on the forward end of the rame, a transverse shaft onthe frame, crank and link connections between the shaft and tool, alongitudinal shaft j ournaled on the frame, worm and worm wheelconnections between said shafts, a second transverse shaft mounted onthe frame,

means for driving the second transverse shaft by the motor, .and afriction clutch connection between the second transverse shaft and thelongitudinal shaft arranged to rotate the longitudinal shaft in eitherdirection when the second transverse shaft is actuated by the motor.

8. A road machine having: a frame with supporting wheels, a motor on theframe, means for driving the machine by the motor, a transverse powershaft journaled on the frame, means for drivin from the motor, aplurality of longitudinal shafts journaled on'the frame, gearingconnecting said last mentioned shafts with the power shaft, aa roadworking tool pivotally connected to the frame of the machine, crank andlink connections between opposite sides of said tool and ythe frame, andactuating connections between each of said crank and link connectionsand one of the longitudinal shafts including means for actuating saidcrank and link connections in either direction when the longitudinalshafts are driven.

9. A road machine having a frame with supporting wheels, a. motor on theframe, means for driving the machine by the motor, a road working toolpivotally mounted on thefframe, a sector pivotally mounted on each sideof the frame, crank and link connections between each sector and oneside of theroad working tool, a worm shaft on each side of the framehaving a worm cooperating withits sector, and means for connecting saidworm shafts with the motor.

10. A road machine having a frame with supporting wheels, a motor on theframe, means for driving the machine by the motor, a road working toolpivoted to the frame, a

the power shaft worm sector pivotally mounted on each 'side of theframe, a crank and link connection between each sector and one side ofthe road working tool, a vertical worm shaft journaled on each side ofthe frame, each having a worm meshing with its sector, a cone clutchmember on the end of each shaft, a longitudinal shaft on each side ofthe frame, each of said shafts having two clutch elements arranged to beshifted into engagement with aclutch element on lone of the worm shafts,means for shifting said last mentioned clutch elements, and -means fordriving said shafts from the motor.

In testimony of which invention, I have hereunto set'my hand, at KennettSquare,

.` ROY C. WILLIAMSON.

